A Base Station System infrastructure is provided which is based on an IP or packet-based, connection-less protocol. The database table comprises a plurality of records, each record including at least one data field for storing user data and at least some of the records including a version control field including version control information. The control circuit may comprise a bias voltage generator that is configured to generate a plurality of bias voltages, and the output current level of the buffer may be controlled based on the plurality of bias voltages. The first inverter inverts an input signal for generating a first internal signal. The other far end of the hinge pin is fixed in relation to the other hinge part by means of a somewhat springy bush which catches in a groove in said hinge pin with at least one inwardly directed protrusion on the one hand, and which is situated against an edge of the aforesaid other hinge part with at least one outwardly directed protrusion on the other hand. The slinging roller is journalled in bearings and driven by a motor at a selected rotary speed.